Structure de la derriksite, Cu4(UO2)(SeO3)2(OH)6

Ginderow, D.; Cesbron, Fabien

doi:10.1107/s0108270183009439

Cited by 23 publications

(22 citation statements)

References 2 publications

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“…In both 1 and 2, the oxygen atoms that constitute the shared edge between the pentagonal bipyramids are m 3 -oxo groups. The structure type exhibited by 2 is most similar to those displayed by derriksite, Cu 4 [(UO 2 )(SeO 3 ) 2 ](OH) 6 (12), and UO 2 (HSeO 3 ) 2 (H 2 O) (18). In both of these compounds, there are one-dimensional chains consisting of uranyl polyhedra that are joined by bridging selenite anions.…”

Section: Synthesesmentioning

confidence: 91%

“…While crystalline solids with hexavalent uranium and iodate are unknown in nature, compounds containing the selenite anion have been structurally characterized in the rare minerals derriksite, Cu 4 [(UO 2 )(SeO 3 ) 2 ](OH) 6 (12) 3 (14), and marthozite, Cu[(UO 2 ) 3 (SeO 3 ) 2 O 2 ](H 2 O) 8 (15). The calcium uranyl selenite, piretite, Ca[(UO 2 ) 3 (SeO 3 ) 2 (OH) 4 ] Á 4H 2 O, is also reported to contain the selenite anion, but its single-crystal structure is unknown (16).…”

Section: Introductionmentioning

confidence: 99%

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Variable Dimensionality and New Uranium Oxide Topologies in the Alkaline-Earth Metal Uranyl Selenites AE[(UO2)(SeO3)2] (AE=Ca, Ba) and Sr[(UO2)(SeO3)2] · 2H2O

Almond

Peper

Bakker

et al. 2002

Journal of Solid State Chemistry

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Section: Synthesesmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Variable Dimensionality and New Uranium Oxide Topologies in the Alkaline-Earth Metal Uranyl Selenites AE[(UO2)(SeO3)2] (AE=Ca, Ba) and Sr[(UO2)(SeO3)2] · 2H2O

Almond

Peper

Bakker

et al. 2002

Journal of Solid State Chemistry

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“…In antlerite [34] and szenicsite [35], one edge-sharing chain is encompassed by two corner-sharing chains that together form a three-leg spin ladder. The edge-and corner-sharing chains can also form infinite layers, as in deloryite Cu 4 (UO 2 )(MoO 4 ) 2 (OH) 6 [36], derriksite Cu 4 (UO 2 )(SeO 3 ) 2 (OH) 6 [37], niedermayrite Cu 4 Cd (SO 4 ) 2 (OH) 6 [38], and langite Cu 4 (OH) 6 SO 2 4 · H 2 O. The crystal structure of the latter mineral is shown in figure 1.…”

Section: Introductionmentioning

confidence: 99%

Interplay of magnetic sublattices in langite Cu₄(OH)₆SO₄· 2H₂O

et al. 2016

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Magnetic and crystallographic properties of the mineral langite Cu 4 (OH) 6 SO 2 4 · H 2 O are reported. Thermodynamic measurements combined with a microscopic analysis, based on density-functional bandstructure calculations, identify a quasi-two-dimensional (2D), partially frustrated spin-1/2 lattice resulting in the low Néel temperature of T 5.7 N  K. This spin lattice splits into two parts with predominant ferro-and antiferromagnetic (AFM) exchange couplings, respectively. The former, ferromagnetic (FM) part is prone to the long-range magnetic order and saturates around 12 T, where the magnetization reaches 0.5 B m /Cu. The latter, AFM part features a spin-ladder geometry and should evade long-range magnetic order. This representation is corroborated by the peculiar temperature dependence of the specific heat in the magnetically ordered state. We argue that this separation into ferro-and antiferromagnetic sublattices is generic for quantum magnets in Cu 2+ oxides that combine different flavors of structural chains built of CuO 4 units. To start from reliable structural data, the crystal structure of langite in the 100-280 K temperature range has been determined by single-crystal x-ray diffraction, and the hydrogen positions were refined computationally.chains develop incommensurate spin correlations and helical magnetic order [8,9], although few instances of FM intrachain spin order are known as well [10,11]. The helical spin arrangement observed in simple binary compounds CuCl 2 [12] and CuBr 2 [13] and in more complex materials like linarite PbCu(OH) 2 SO 4 [14], all being frustrated J J 1 2 spin chains, may trigger electric polarization induced by the magnetic order, thus leading to multiferroic behavior [15-18]. Additionally, small interactions beyond the isotropic Heisenberg model lead to an intricate magnetic phase diagram, including multipolar (three-magnon) phases, which has been studied recently [19]. However, the complex interplay of frustration and anisotropy needs further investigations on different systems as, e.g., LiCuVO 4 [20-23]. One may naturally ask what happens when two types of spin chains, those with edge-and corner-sharing geometries, are placed next to each other within one material. Spin systems comprising several magnetic OPEN ACCESS RECEIVED =. A more detailed description of the procedure can be found, e.g., in [31,54]. Alternatively, strong electron correlations are added on top of LDA by the LSDA+U method in a mean-field way and are thus included in the self-consistent procedure. This allows for calculating total exchange constants J J J ij ij ij FM AFM ( ) m = J J J 81

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“…Demesmaekerite, derriksite, guilleminite and marthozite are from the Musonoi Cu-Co mine, near Kalwezi, Katanga Province, Democratic Republic of Congo; piretite and guilleminite from Shinkolobwe, Katanga Province, Democratic Republic of Congo; haynesite and larisaite from the Repete mine, San Juan Co., Utah, USA. [8,9] Structures of derriksite, Cu 4 [(UO 2 )(SeO 3 ) 2 (OH) 6 , and demesmaekerite, Pb 2 Cu 5 [(UO 2 )(SeO 3 ) 3 ] 2 (OH) 6 (H 2 O) 2 , are characterised by infinite chains formed from uranyl and selenite ions, [5,10,11] while the remaining uranyl selenite minerals, guilleminite, Ba[(UO 2 ) 3 O 2 (SeO 3 ) 2 ](H 2 O) 3 , [12] marthozite, [13] haynesite, [14] piretite, Ca[(UO 2 ) 3 (SeO 3 ) 2 (OH) 4 ] (H 2 O) 4 , [15] and larisaite, Na( 4 [9] by uranyl oxo-hydroxo selenite sheets. According to Chukanov et al [9] the general formula of guilleminite, marthozite, haynesite, piretite and larisaite is M 0 -1 [(UO 2 ) 3 (SeO 3 ) 2 (O,OH) 2 -4 ]·nH 2 O, where n = 3-8, M = M 2+ , 2 M + .…”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopic study of the mineral guilleminite Ba(UO₂)₃(SeO₃)₂(OH)₄·3H₂O

Frost

Čejka

Dickfos

2008

J Raman Spectroscopy

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The Raman spectrum of the mineral guilleminite Ba[(UO 2 ) 3 O 2 (SeO 3 ) 2 ](H 2 O) 3 was studied and complemented by the infrared spectrum of this mineral. Both spectra were interpreted and compared with the spectra of marthozite, larisaite, haynesite and piretite, all of which should have the same phosphuranylite anion sheet topology. The presence of symmetrically distinct water molecules and hydrogen bonds was inferred from the spectra. This is in agreement with the crystal structural analysis of guilleminite. U-O bond lengths in uranyl and O-H· · ·O hydrogen bond lengths were calculated from the Raman and/or infrared spectra of guilleminite.

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Structure de la derriksite, Cu4(UO2)(SeO3)2(OH)6

Cited by 23 publications

References 2 publications

Variable Dimensionality and New Uranium Oxide Topologies in the Alkaline-Earth Metal Uranyl Selenites AE[(UO2)(SeO3)2] (AE=Ca, Ba) and Sr[(UO2)(SeO3)2] · 2H2O

Variable Dimensionality and New Uranium Oxide Topologies in the Alkaline-Earth Metal Uranyl Selenites AE[(UO2)(SeO3)2] (AE=Ca, Ba) and Sr[(UO2)(SeO3)2] · 2H2O

Interplay of magnetic sublattices in langite Cu₄(OH)₆SO₄· 2H₂O

Raman spectroscopic study of the mineral guilleminite Ba(UO₂)₃(SeO₃)₂(OH)₄·3H₂O

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Structure de la derriksite, Cu4(UO2)(SeO3)2(OH)6

Cited by 23 publications

References 2 publications

Variable Dimensionality and New Uranium Oxide Topologies in the Alkaline-Earth Metal Uranyl Selenites AE[(UO2)(SeO3)2] (AE=Ca, Ba) and Sr[(UO2)(SeO3)2] · 2H2O

Variable Dimensionality and New Uranium Oxide Topologies in the Alkaline-Earth Metal Uranyl Selenites AE[(UO2)(SeO3)2] (AE=Ca, Ba) and Sr[(UO2)(SeO3)2] · 2H2O

Interplay of magnetic sublattices in langite Cu4(OH)6SO4· 2H2O

Raman spectroscopic study of the mineral guilleminite Ba(UO2)3(SeO3)2(OH)4·3H2O

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Interplay of magnetic sublattices in langite Cu₄(OH)₆SO₄· 2H₂O

Raman spectroscopic study of the mineral guilleminite Ba(UO₂)₃(SeO₃)₂(OH)₄·3H₂O